Firefox/Feature Brainstorming:Document Saving

Firefox have the ability to save almost all kind of the web pages, but i strongly think that Firefox needs to include one more feature to save web documents. It is saving web documents as Single File because saving web documents as file&folder is not usefull for the users. For example users have a really hard time when they save some web documents in a folder if there already are folders in it and browsing becomes confusing and confusing in time because of the folders coming with the saved documents. Also when users need to transfer saved web documents to another device such as USB Disk or something, they have a hard time again because they need to find the folders of the files. Thanks..